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One-for-All good article on cards
Card Type for Camera Storage
- most common type: SD card
- high end sports camera: CF card
- high end video camera: 2.5 inch SSD
- other cards: rarely used
SD card
There are 3 size of SD card
- Full size SD: most common type for cameras
- miniSD: rarely seen nowadays
- microSD: most common type for slim compact cameras and smart phones
We are mainly talking about Full size SD card From Here;
SD card has 3 property to consider when choosing
- capacity: how many GBs of storage
- category label based on capacity:
- SD: 1-2 GB
- SDHC: 4-32 GB
- SDXC: 64-128 GB and upto 2TB
- Maximum Read/Writing speed: how fast it can quickly move in/out data
- category label based on max R/W speed: (MB/s)
- R 280MB/s W 250MB/s : Video Pro
- R 95MB/s W 90MB/s : Photo Pro
- R 90MB/s W 60MB/s : Photo Burst Good
- R 90MB/s W 40MB/s : Photo Burst Good
- R 80MB/s : Good
- R 48MB/s : Average
- below : Low
- Minimum video recording performance: how fast it can steadily record video
- category label based on Minimum write speed (MB/s) and its corresponding Bus Mode (old to new):
- Class 2,4 (2-4MB/s): Normal speed Bus (DVD resolution recording)
- Class 6 (6MB/s ): Normal speed Bus (HD-FHD resolution recording)
- Class 10 (10MB/s ): High Speed Bus (High Quality HD-FHD resolution recording)
- UHS 1 (10MB/s) : UHS-I Bus (High Quality HD-FHD resolution recording)
- UHS 3 (30MB/s) : UHS-I/II Bus (4K resolution recording)
- V30 (30MB/s) : UHS-I/II Bus (4K resolution recording)
- V60 (60MB/s) : ? Bus (6K? resolution recording)
- V90 (90MB/s) : ? Bus (8K? resolution recording)
- category label based on its Bus Mode:
- Normal Speed bus: 12.5MB/s
- High Speed bus: 25 MB/s
- UHS-I bus: 50MB/s - 100MB/s
- UHS-II bus: 150MB/s - 300MB/s